Are the flights still in your airline's schedule (Crew Center -> Virtual Airline -> Flightplan)? And have you double-checked if you have the correct type-rating, there's the appropriate airplane at the departure airport and that your rank allows to use the fleet the airplane is in?

Well, we need to put that on the wiki. But until that, here's a brief explanation: Airport -> the number of airports you've visited Flight-Hours -> number of hours you've been enroute Distance -> number of nautical miles you've flown Passengers -> Number of passengers you've transported real-time ->...